PMID- 29312572 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220314 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 65 DP - 2017 Dec 12 TI - Comparison of ALK status between primary and corresponding lymph node metastatic tumors in lung cancer patients. PG - 108840-108847 LID - 10.18632/oncotarget.22294 [doi] AB - BACKGROUND: The anaplastic lymphoma kinase (ALK) protein has recently become a promising target in the treatment of non-small cell lung carcinomas(NSCLC) patients with ALK translocation because of the high response rates obtained with an ALK inhibitor. ALK translocations are present in approximately 3-5% of NSCLC patients. According to the literature, little information about the relationship of ALK status between the primary tumor and metastatic sites has been reported. We intended to determine whether the ALK translocations of primary lung cancers are consistent with those in corresponding metastatic lymph node tumors. MATERIALS AND METHODS: We analyzed ALK translocations from paired primary and metastatic lymph node tumors in 78 lung cancer patients who had not received TKI before the tissues were sampled. RESULTS: Using fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC) methods, all 45 patients with ALK translocation-positive primary lung tumors had translocations in the metastases. For 33 patients who were ALK negative in the primary tumors, 1 (3%) was ALK positive in their metastatic tumors. CONCLUSION: According to a paired t-test, there is no significant difference between primary lung tumors and metastatic sites. Analysis of ALK translocations in the primary lung tumor would be suitable for planning the use of a TKI for advanced NSCLC, but it would be better to detect metastasis specimens as ALK negative specimens if both primary and metastatic specimens have developed. FAU - Gao, Qiqi AU - Gao Q AD - Department of Pathology, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. FAU - Ma, Honghai AU - Ma H AD - Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. FAU - Wang, Bo AU - Wang B AD - Department of Pathology, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. FAU - Yao, Yake AU - Yao Y AD - Department of Respiration, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. FAU - Zhou, Jianya AU - Zhou J AD - Department of Respiration, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. FAU - Zhou, Jianying AU - Zhou J AD - Department of Respiration, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. LA - eng PT - Journal Article DEP - 20171106 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5752485 OTO - NOTNLM OT - ALK OT - FISH OT - IHC OT - metastasis OT - non-small-cell lung cancer COIS- CONFLICTS OF INTEREST The authors declare no conflicts of interest. EDAT- 2018/01/10 06:00 MHDA- 2018/01/10 06:01 PMCR- 2017/12/12 CRDT- 2018/01/10 06:00 PHST- 2017/02/06 00:00 [received] PHST- 2017/07/30 00:00 [accepted] PHST- 2018/01/10 06:00 [entrez] PHST- 2018/01/10 06:00 [pubmed] PHST- 2018/01/10 06:01 [medline] PHST- 2017/12/12 00:00 [pmc-release] AID - 22294 [pii] AID - 10.18632/oncotarget.22294 [doi] PST - epublish SO - Oncotarget. 2017 Nov 6;8(65):108840-108847. doi: 10.18632/oncotarget.22294. eCollection 2017 Dec 12.